Resilient shoe-heel lift



,F. KISHQ' RESILIENT SHOE HEEL LIFT.

- APPLICATION HEEEJ MAR- 23, 1919. 1,333,9 3..

E Patented Mar. 16,1920.

FRANK KISH, OF ELYBIA, OHIO.

BESILIENT' SHOE-HEEL LIFT.

Specification of Letters Patent.

Patented Mar. 116,

Application filed March 2'5. 1919, Serial No. 285,837.

To aZZ whom it may concern.

Be it known that I, Faun; Kisrr, a citizen of the United States, residing at Elyria. in the county of Lorain and State of Ohio, have invented certain new and useful Improvements in Resilient ShoeHeel Lifts, of which the following is a specification.

This invention relates to improvements in resilient shoe-heel lifts and more particularly to improvements in rubber lifts.

Various types of attachable rubber heel lifts have been designed with the object in View of obtaining a maximum cushioning effect so as to absorb to the highest possible degree the shock of impact with the ground surface. In practically every instance dependence has been placed solely upon the inherent resiliency of the rubber from which such lifts were made, and while rubber of good quality and suitably cured will possess high degree of resiliency, nevertheless the degree of yieldability possessed by the rubber is limited by the degree to which it may be compressed. Thus where an ordinary flat rubber heel lift is employed the degree of resiliency which it will possess will be limited by the degree to which it may be compressed under the ordinary pressure imposed upon it in walking. It is therefore one of the primary objects of the present invention to provide a rubber heel lift of such construction that it will possess a far greater degree of resiliency than could be obtained by placing dependence solely upon. the inherent resiliency of the rubber of which such a lift is made.

Another object of the invention is to provide a rubber heel'lift having one or more anti-slipping lugs upon its under face. which lugs will be of such form and so positioned as to insure against slipping of the heel in any direction whatsoever, the lug or lugs being so arranged moreover that when the lift is applied to a shoe-heel the tread face or faces thereof will be so disposed that the lift will have maximum bearing surface for contact with the ground without in any way impairing the efi'ectiveness of the lugs as a preventive of slipping.

A further object of the invention is to so form the attaching face of the lift and to so arrange the said anti-slipping lug or lugs upon the tread face of the lift that not only will the engaging or tread face or faces of the lug or lugs be caused to assume the po sitions stated in the attachment of the lift to a shoe-heel, but also the maximum. degree of cushioning effect will be obtained.

A further object of the invention is to so construct the lift that the body of thelift will be protected from wear for a maximum period of time due to the presence and arrangement of the tread lug or lugs,

A further object of the invention is to so arrange the lug or lugs that the cushioning effect of the lift will be evenly distributed at the opposite sides of the tread face of the lift.

While my invention is susceptible of various modifications the basic idea involved is the formation of a recess in the attaching face of the resilient lift and the formation upon the tread face of the lift of an antislipping and wear lug located opposite the said recess whereby the relatively thin wall between the bottom of the recess and the top of the lug will constitute ahighly resilient yielding medium enabling the lift to absorb to the maximum the shocks of impact with the ground surface and it is to be understood that the invention is not to be limited to the precise form of lift herein dis- .closed but that this form may be greatly varied as for example by changes in the conformation of the lug or lugs and the respective recess or recesses. Also so far as concerns the basic principle of the invention the disposition of the lug or lugs and corresponding recess or recesses may be varied with relation to the margin of the body of the lift. Also it Will be understood that the number of lugs and corresponding recesses maybe varied without departing from the basic idea. o

In the accompanying drawings:

Figure 1 is a perpective view of the under side of the lift;

Fig. 2 is a perspective view of the upper side of the lift;

Fig. 3 is a transverse sectional View on the line 33 of Fig. 2; I

Fig. l'is a sectional perspective view on the line 4-4 of Fig. 2;

ioo

' Fig. 5 is a vertical longitudinal sectional view through the lift applied to an ordinary shoe-heel;

Fig. 6 is a detail vertical transverse sectional view illustrating a slight modification of the invention.

In the drawings the body of the lift is indicated in general by the numeral 1 and the same is molded to form and is made of rubber or a composition possessing the required degree of resiliency. The body 1 of the lift has the usual form of a shoe-heel, the breast of the lift being indicated by the numeral 2 and the corners of the breast by the numeral 3. The circumferential edge of the lift is indicated by the numeral 1. The b dy 1 has a flat or plane t-read'face indica ed by the numeral 5 and in that form of the intention shown in the accompanying drawings the said body of the lift is formed is provided with but a single lug this lugwould preferably be arranged with substantially equal portions lying at opposite sides of the said median line. Each lug 6 has an outer arcuate side 7 concentric to the oppositely located portion of the circumferential edge 4 of the body 2, the opposite side and the ends of each lug taking the form of two semi-circles meeting at adjacent ends and disposed facing the first mentioned side of the lug, as indicated by the numeral 8. While a lug of this articular contour has been found to most e ectually prevent sllpping of the heel in either direction lateral y and also in a forward or rearward direction, it will be understood that as heretofore stated the contour of the lugs may be varied. The tread face of each lug is indicated by the numeral 9 and it is, of course, this face which is to contact the ground surface when the lift is being worn. If desired, the lift 'may be provided upon its tread face 5 with a third lug indicated by the numeral 10, this lug being located between the lugs 6 and partially in advance of the said lugs although if desired this third lug may be located wholly between the lugs 6 or in a line between the said lu s and wholly in advance of the lugs. Pref brably, if this lug is present, it is located at some point in the longitudinal median line of the lift. This lug, of course, serves as an'additiona-l means for preventing slipping of the heel and while it might be dispensed with, its presence, of course, serves the useful purpose stated.

The attaching face of the body of the lift is dished and indicated by the numeral 11 and this face has a flat or plane intermediate portion 12 which, in the article per se, occupies a plane parallel to the plane of the tread face 5 of the said body. However, this portion 12 of the face 11, while it conforms to the marginal contour of the body 1 does not extend to the margin of the body 1 "portion 12, the said face 11 is formed with recesses 14 which are located directly opposite respective ones of the lugs 6 and the walls of which recesses have the same contour as the sides of the said lugs. Thus the lugs and recesses are of counterpart contour and they are correspondingly located upon and in the opposite faces of the lift body so thatthe walls of each recess: lie immediately above corresponding sides of the lugs. Furthermore, it is desirable that the lugs and recesses be of corresponding dimensions. Also it is preferable that the lugs be of a thickness equal to the depth of the respective recesses and due to their relative disposal, there is provided between each lug and its respective recess a relatively thin web or wall indicated by the numeral 15 which will presently be referred to. Inasmuch as the lugs 6 and recesses 14 are relatively disposed as stated above, the outer walls of the recesses, indicated by the numeral 16, will, of course, be concentric to the oppositely located portions of the circumferential edge 4 of the lift body and preferably the said walls 16 of the recesses are coincident with the line defining the inner boundaries of the inclined marginal portions 13 as clearly shown in Fig. 2 of the drawings.

The portion 12 of the face 11 of the lift is also formed with a recess 17 corresponding in contour to the lug 10 and located opposite the same as in the case of the lugs 6 and recesses 14.

The lift is formed in its tread face 5 with the usual semi-closed openings 18 for the passage of the nails or the like which are to secure the lift to the shoe-heel and these openings may be arranged in any desired 7{)nanner and may be of any desired num- Inasmuch as the attaching face of the lift is dished or concave, when the lift is nailed tothe shoe-heel, this face will be flattened out so that then the tread face will become concaved to a greater or less degree. As in the initial form of the lift the tread faces of the lugs 6 and 10 occupy a common plane parallel to the plane of the tread face proper of the lift, when the lift is nailed into place and its siidj tread face becomes concave, the said tread faces of the lugs will become inclined toward the longitudinal center line of the lift as shown in Fig. 5 of the drawings, the said tread faces of the lugs then occupyin a plane inclined upwardly toward the breast of the heel and substantially touching the \corners of the breast as indicated by the dot and dash line in the said figure. first comes into contact with the ground surface, the lowermost or rear ends of the lugs will first engage the ground surface and as the foot is brought to come flatly in contact with the ground surface the tread faces of the lugs and the breas of the heel will simultaneously contact the surface, the lugs, however, yieldingin an upward direction until the entire marginal )ortion of the tread face of the lift engages the ground surface.

From the foregoing description of the invention it will be seen that a maximum cushioning effect is obtained due to the provision of the lugs and the oppositely located related recesses, the relatively thin wall portions 15 between the lugs and recesses serving as a cushioning medium possessing a high degree of yielda-bility and resiliency and adapting the lugs to yield more readily to the force of impact and thereby more readily absorb the shock without in any way impairing their efficiency as an anti-slipping preventative.

In the form of the invention shown in Figs. 1 to 5 inclusive, the lugs and respective recesses have, as stated, substantially the same dimensions and are oppositely located but in the form of the invention shown in Fig. 6 the lug 6 is of slightly smaller dimensions than the respective recess 11% so that the wa'll portion 15 possesses an increased degree of yieldability.

. Having thus described the invention, what is claimed as new is:

1. A resilient shoe-heel lift provided upon its tread face with lugs normally projecting beyond the plane of said face and located at the opposite sides of the longitudinal median line of the lift and having their outer sides substantially concentric to the adjacent marginal portions of the lift, the said lift being formed with a dished attaching face having recesses located opposite the said lugs and substantially conforming in contour and marginal dimensions thereto, whereby when the lift is secured to aheel and its attaching face is flattened against said heel, its tread face will be concave and the tread surfaces of the lugswill become inclined in-thc direction of the breast of the lift. Y

2. A resilient shoe-heel lift provided upon its tread face .with lugs normally projecting beyond the plane of said face and located at opposite sides of the longitudinal median line of the lift and also provided wilth a. lug located between the first mentioned lugs in the said longitudinal median line of the lift. the attaching face of the lift being dished and formed with recesses located opposite the lugs and conforming in marginal contour thereto, whereby when the lift is secured to a heel and its said attaching face Thus when the heel lift is flattened against said heel, its tread face will be concave and the tread surfaces of the lugs will become inclined toward the longitudinal center line of the lift.

B, A resilient shoe-heel lift having a dished attaching face formed with a recess, the lift beingprovided upon its tread face wvith a lug normally projecting beyond the plane of said tread face and located opposite the recess and conforming sub stantially to the marginal contour of said recess, whereby when the lift is secured to a heel and its attaching face is flattened against said heel its tread face will beconcave and the tread surface of the lug'will become inclined toward the longitudinal center line of the lift.

4:. A resilient shoe-heel lift provided upon its tread face near the rear end thereof with a lug having a tread surface substantially parallel to the said face, the attaching face of the lift being dished whereby when the lift is secured to a heel and its said attach-v ing face is flattened against the heel, its tread face will be concaved and the tread surface of the lug will become inclined toward the longitudinal center line of the lift.

5. A resilient shoe heel lift having a fiat tread face and provided upon its attaching face with a marginal inclined raised portion defining a concavity in the said attaching face. the lift being formed upon its tread face with a lug normally projecting beyond the plane of said tread face and located near the rear thereof and having a tread surface normally substantially parallel to the tread face of the lift. and the said lift being formed in its attaching face, within the bounds of the raised marginal portion, with a recess located directly opposite'the said I lug and conforming substantially thereto in contour-and dimensions, whereby when the lift is secured to a heel and its said attaching face flattened against said heel its tread face will be concave and the tread surface of the lug will become inclined toward the longitudinal center line of the lift.

6. A resilient shoe heel lift provided upon its tread face near the rear endthereof with lugs normally projecting beyond the plane of said face and located at opposite sides of the longitudinal median line of the lift, said 'lift having its attaching face dished and.

provided with recesses located opposite the lugs and substantially conforming in contour and marginal dimensions thereto, whereby when the lift is secured to a heel and ite attaching face flattened against said heel its tread face will be concave and the tread surfaces of the lugs will become inclined toward the longitudinal center line of the lift.

In testimony whereof I affix my signature.

FRANK KISH. [1 5. 

